<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!--跨行合并：rowspan="合并单元格个数"-->
    <!--跨列合并：colspan="合并单元格个数"-->
    <!--找到想要合并的单元格，最后删除多余的单元格-->
    <table align="center" width="500" height="250" border="1" cellspacing="0" >
      <tr>
        <td></td><td colspan="2"></td>
      </tr>  
      <tr>
        <td rowspan="2"></td><td></td><td></td>
      </tr>  
      <tr>
        ><td></td><td></td>
      </tr>  
    </table>
</body>
</html>
